transmission distance in radio communication

[Bhuvanesh123]

i have bought all the components to make radio transmitter and receiver.but i am week at basics i dont know which factor cause effect on transmission.i mean which decides transmission range

 

[jiripolivka]

Go and study the basics first. Without knowledge you are like a guy who bought a truckload of auto parts but never saw a running car under hood.

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By the way it s also illegal to transmit radio signals without a license.